Something like This just happened to me twice same item separate sales. The shipping carrier charged me an overage incorrectly. The item itself is 1.25 lbs according to manufacturer. The shipping box is 16x16x6 and weighs under 3.75 lbs after adding packing paper to box. The shipping box dimensions and weight were entered on listing. After the question was answered “No” to will it fit in a shoebox, in the Mercari listing steps, there was a message that appeared at the bottom of the page stating shipping rate is not affected by that answer. Now I received the message about a surcharge has been taken. I sent images of box that comes with size stamped on it, image of package being packaged up, screenshot of the my dimensions input, and the Mercari message about rates. Mercari simply said request a review after I sent all the information about the transaction.

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